Can't access internet unless Eddie is running in Linux Mint 18.1

I am facing the dreaded DNS issue that is caused by not exiting Eddie properly, which in the case of Linux Mint, is due to Eddie crashing frequently (there is a long thread about this). There is also a long thread about the DNS issue, but that thread is all about Windows and provides no step-by-step instuctions for Linux users who encounter this.

​This is the resolv.conf file on a Linux Mint PC that is able to connect to the internet with Eddie (AND network lock) turned OFF. In other words, this is what my resov.conf file should be when I disconnect from Eddie:

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.1.1

​

However, this is what my resolv.conf file looks like when I exit Eddie now:

​# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN

​

There is no nameserver, and adding it manually does nothing to resolve the issue. How can I fix this so the resolv.conf file is restored correctly? I need to be able to access the internet when Eddie is disconnected. Thanks.